Title:
METHOD FOR PREPARING BLAST FURNACE BLOW-IN COAL
Document Type and Number:
WIPO Patent Application WO/2014/057768
Kind Code:
A1
Abstract:
Provided is a method that is for preparing blast furnace blow-in coal and that can, at a low cost, obtain blast furnace blow-in coal that suppresses occlusion by blast furnace blow-in ash or accretion of blast furnace blow-in ash in a pathway leading to a tuyere of a blast furnace main body, while suppressing a decrease in the amount of heat release. On the basis of data obtained by means of analyzing coal, a first and second coal type satisfying conditions (A, B) are selected (S2, S3), on the basis of the CaO content in the ash of the first and second coal types when the oxides of Al, Si, Ca, and Mg in the ash is 100 wt% and the Al2O3 content in the ash is 20 wt%, the mixing ratio of the first coal type and second coal type that results in the CaO content in the ash of the mixed coal resulting from mixing the first coal type and second coal type being at least 40 wt% is derived (S4), and the first coal type and second coal type are mixed (S5) at the mixing ratio.
Inventors:
NAKAGAWA KEIICHI (JP)
OMOTO SETSUO (JP)
SAKAGUCHI MASAKAZU (JP)
HAMADA TSUTOMU (JP)
OMOTO SETSUO (JP)
SAKAGUCHI MASAKAZU (JP)
HAMADA TSUTOMU (JP)
Application Number:
PCT/JP2013/074826
Publication Date:
April 17, 2014
Filing Date:
September 13, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
C21B5/00
Foreign References:
| JP2001294911A | 2001-10-26 | |||
| JP2001323307A | 2001-11-22 | |||
| JPS5779103A | 1982-05-18 | |||
| JP2005068474A | 2005-03-17 |
Attorney, Agent or Firm:
MITSUISHI, Toshiro et al. (JP)
Toshiro Mitsuishi (JP)
Toshiro Mitsuishi (JP)
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